Work supporting and clamping stand



April 10, 1951 A. MaCLEQD' 2,548,114

WORK SUPPORTING AND CLAMPING STAND Filed April 7, 1948 2 Sheets-Sheet lApril 10, 1951 acLE D 2,548,114

WORK SUPPORTING AND CLAMPING STAND Filed April 7, 1948 2 Sheets-Sheet 2v nyxl izvr R.

Patented Apr. 10, 1951 WORK SUPPORTIN STA G AND CLAlWPING ND AngusMacLeod, Boston, Mass. Application April '7, 1948, Serial No. 19,620

1 Claim.

This invention relates to holding apparatus which also will serve as acarpenters jack.

The principal object of my invention is to provide a new and novelholding or gripping apparatus that will fixedly hold large objects suchas windows and doors while they are worked upon at any desired height.

Another object is to so construct said apparatus that it is convenientto work upon a window, door or the like held by it whether standingupright or on its side.

A further object is to so construct said apparatus that it holds a dooror window at a convenient height and yet doesnt take so much floor spacethat it interferes with the workman.

I am aware that Vises and gripping apparatuses are well known; but myespecial purpose has been to provide one that is especially convenientfor a carpenter or other woodworker who works on large articles such asdoors and windows.

The foregoing and other objects which will appear as the nature of theinvention is better understood, may be accomplished by a construction, acombination and operative arrangement of parts such as is disclosed bythe drawings and specification. The nature of the invention is such asto render it susceptible to various changes and modifications, and,therefore, I am not to be limited to said disclosure; but am entitled toall such changes therefrom as fall within the scope of my claim.

In the drawings:

Figure 1 is a perspective view of my apparatus showing a window in dotand dash lines, held therein. Figure 2 is a front elevational view of Imy apparatus, and Figure 3 is a side elevational View and Figure 4 is atop plan view thereof.

Figures 5 and 6 are sectional views taken on the lines 5-5 and 66respectively of Figure 3.

Figure 7 is an enlarged, sectional View taken on line l--'l of Figure 2.

Figure 8 is a front elevational view of my apparatus in tilted position,the dot and dash lines showing an article held thereby.

Figure 9 is a front elevational view showing my apparatus lying on itsside, and holding a door shown in dot and dash lines.

Figure 10 is an enlarged, sectional view taken on the line !ill ofFigure 2.

As illustrated, my apparatus has a table support having a table top l2below which are four supporting legs M, as shown, and a base member 16.Said legs l4 extend below said base which they support. Said base hascut-out portions I! at the corners and is affixed to said legs 2 l4 byan adhesive or other well known means. Secondary legs 18 are attached tosaid legs 14, having longitudinal slots 20 therein to permit a widerange of adjustment with respect to said legs l4. Bolts 24 with wingnuts extend through said slots 20 and through holes 22 in said legs 14to thereby hold each said secondary leg 18 to said leg I4. If it isdesired to increase or decrease the height of my apparatus the said wingnuts are loosened on the bolts 24 and the secondary legs are slid withrelation to said legs 14, as indicated at the left in said Figure 8.Various heights may be attained, or the apparatus may be slanted asshown in said Figure 8, by adjusting two of the secondary legs l8 only.

There is a relatively large opening 26 and a relatively small opening 28in said table top l2.

Directly below there also are similar large and.

small openings 38 and 32 respectively in said base member 15. A movablegripping member has a jaw 34 attached to which is a lower extension 35which extends through said larger holes 26 and in said table top andbase respectively, the holes being large enough to thus permit lateralmovement of said lower extension 35. Another gripping member, which isstationary, has a jaw 36 attached to which is a lower extension 31 whichextends through said smaller holes 28 and 32 in said table top and baserespectively.

A bolt 40 extends between and through the lower portions of saidgripping member extensions and 3'! and it has a nut 4| at the outside.Between said extensions 35 and 31 and surrounding said bolt there ispreferably provided a coil spring 42 which is ordinarily under sometension, the degree depending upon the space between said extensions 35and 31.

At the upper portion of said extension 35, at the outside, is a bearingblock 44 which has a hole 45, not threaded, therein. Also at the upperportion of said extension 31, at the outside, is another lbearing block46 having a threaded hole 41 therein through which an adjusting leadscrew 50 .passes and screw threadedly connects, and extends to a handwheel 52 which has a handle 54. Said lead screw 50 has a shoulder 55formed thereon which is adjacent bearing 44.

There is a washer 56 movably mounted on said lead screw 50 which is keptin position by a cotter pin 58 extending through said lead screw 50 sothat said washer 56 is always between said extension 35 and said cotterpin 58, consequently when said lead screw 50 is rotated by turning saidhand wheel 52 said movable gripping member extension 35 is moved towardsor away from said extension 31 depending upon the direction of rotationof said hand wheel 52.

My apparatus is adapted to grip and hold a large object such as a windowW indicated in said Figure 1 or a door D indicated in Figure 9. It maybe tilted at various angles by adjustment of said secondary legs It.

To operate, the door or other article in my apparatus is set on saidtable top [2 between said two jaws 34 and 36 and said hand wheel 52 isrotated to thereby effect movement of said movable jaw 34 and extension35 towards closing position. This movement of said jaw 34 and extension35 toward the other jaw 39 and extension 37 is effected when theshoulder 55 of said lead screw 50 forcibly bears against said bearing49, thus pushing it and said jaw extension 35 towards said extension 31.Said wheel 52 is rotated in the opposite direction to move said jawsfarther apart. 1

What I claim is:

Holding apparatus comprising a table top and to be held supporting legstherefor extending downwardly therefrom, a base member spaced downwardlyfrom said top and between and supported by said legs, said table tophaving an opening extending therethrough, said base member having anopening extending therethrough, two gripping mem bers embodying jawportions above said table top and having extension portions extendingfrom said jaw portions through said table top opening downwardly andthrough and extending below said base member opening, a pin memberextending between and connecting said extension portions below said basemember, a coil spring on said pin member between said extension portionsnormally under compression, means connecting said extension portionsbelow said table top and above said base member embodying a lead screwthat screw-threadedly connects with one said extension portion andextends through the other said extension portion and abutment means onsaid lead screw one on each side of said other extension portion to moveone said gripper member away from or towards the other upon actuation ofsaid lead screw.

ANGUS MACLEOD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

